I kinda skipped through the briefing, but i headed out with the cheapest gear possible (costing under 600 gmp), because you aren't finishing the mission on this one and rewarded gmp. In total the run costs about 12000 GMP total each run, but isn't that costly considering one side op is about 50000 avg gmp.

There are about 6 cargos lying around Wahk Sind Barracks, so you'd get a good couple of runs before waiting for it to reset.